声波

A novel Ultrasonic/sonic Driller/Corer has been developed for deep space exploration.

提出了一种可用于外太空探测和取样的超声波/声波钻探采样器。

Pasadena, California with work from engineers at Cybersonics Incorporated in Erie, Philadelphia/ Cybersonics holds a patent for the Ultrasonic/Sonic Drill and Corer.

该公司掌握着超声波/声波钻和岩芯钻取器的专利。

The irregular corrugation of inside wall prevents the focus of sound wave.

内壁不规则的波状形式避免声波的焦点。

The improved experiment device of interference of sound wave can feel the interference countervail and strengthening of sound in ordinary lab, and measure the sound velocity.

本文给出了改进声波干涉实验装置的具体方案，该改进装置可在普通实验室内感受声音的干涉相消和干涉加强现象，并能测定声速和频率。

The propagation of elastic wave in a cylindrical bore hole containing a fluid (for example, the muddy fluid is generally used) for acoustic logging is analyzed with a simplified model.

本文分析了简化模型下声波测井时裸眼井中弹性波的传播，此波场可看成是轴向传播有不同波矢的分波的叠加。

The next step is to found the model of a cylindrically layered borehole embedded in poroelastic media.

首先分析了声波在孔隙介质中传播时渗流运动的特点，着重讨论了附加质量和动态渗透率的意义。

With practical examples, crosshole sonic logging is employed in this paper to inspect the integrity of the cast-in-place pile and to determine the degree of defectiveness.

用实例介绍声波透射法在混凝土灌注桩桩身完整性检测中的应用效果，确定缺陷的范围。

Many natural phenomena and physical laws can be described by time dependent nonlinear differential equations, such as heat conduction equation, sound wave and elastic wave equation, reaction diffusion and convection diffusion equation, fluid and aerodynamics equations, etc.

大多数的自然现象与物理规律都可归结为与时间相关的非线性偏微分方程，诸如热传导方程、声波与弹性波方程、反应扩散与对流扩散方程、流体与气体力学方程组等发展方程。

The efficiency of the sonic sifting device is dependent on the thickness of the filter to be analysed.

声波筛选设备的效率取决于被分析过滤器的厚度。

Real diffusor designs use an irregular surface having a complex pattern to scatter the sound waves even more thoroughly.

真正diffusor设计使用不规则的表面有一个复杂的模式，以散射声波更彻底。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。